import router, { asyncRoutes } from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/404'] // no redirect whitelist

// 路由前置守卫
router.beforeEach(async(to, from, next) => {
  NProgress.start()
  document.title = getPageTitle(to.meta.title)
  // determine whether the user has logged in
  const hasToken = getToken()
  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      // 当next(地址)时，不会执行后置守卫，因此需要将NProgress.done()写在这
      next({ path: '/' })
      NProgress.done()
    } else {
      const userId = store.getters.userId
      if (userId) {
        next()
      } else {
        try {
          // get user info
          const { roles } = await store.dispatch('user/getUserInfo')
          const filterRoutes = asyncRoutes.filter(item => {
            return roles.menus.includes(item.name)
          })
          store.commit('user/setRoutes', filterRoutes)
          router.addRoutes([...filterRoutes, { path: '*', redirect: '/404', hidden: true }])
          // router 动态添加路由之后 需要转发一下
          next(to.path)
        } catch (error) {
          // remove token and go to login page to re-login
          // await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

// 路由后置守卫
router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
